Means for mounting concrete structural members

ABSTRACT

A first member having a dovetail slot is bonded to the wall panel or other member to be mounted. A second member having a dovetail projection is slidably mounted in the first member. The second member has a second dovetail slot at right angles to its dovetail projection. A third member having a dovetail projection is mounted in the slot of the second member. The third member has a threaded aperture for receiving a mounting bolt. The dovetail means provides adjustment of the mounting aperture along two axes.

United States Patent Natale J. Tummarello [72] Inventor 2073 Hillside Ave., Bellmore, N.Y. 1 1710 [21 1 Appl. No. 23,802 [22] Filed Mar. 30, 1970 [45] Patented Nov. 16, 1971 [54] MEANS FOR MOUNTING CONCRETE STRUCTURAL MEMBERS 1 Claim, 3 Drawing Figs.

[52] US. Cl Isl/41.76, 52/710, 287/189.36 F [51] Int. Cl F16b 37/04 [50] Field of Search 15 1/4l.7, 41.71, 41.75, 41.76; 287/189.36 F; 52/709, 710, 711, 704; 248/16, 23,124,224, 287

[56] References Cited UNITED STATES PATENTS 1,594,412 8/1926 Garvin 52/709 1,732,992 10/1929 Spiro 151/41.76 1,285,628 11/1918 Craley... 248/23 2,345,650 4/1944 Attwood 7 15 1 /41. 75

Primary ExaminerMarion Parsons, Jr. Attorney-James P. Malone ABSTRACT: A first member having a dovetail slot is bonded to the wall panel or other member to be mounted. A second member having a dovetail projection is slidably mounted in the first member. The second member has a second dovetail slot at right angles to its dovetail projection. A third member having a dovetail projection is mounted in the slot of the second member. The third member has a threaded aperture for receiving a mounting bolt. The dovetail means provides adjustment of the mounting aperture along two axes.

MEANS FOR MOUNTING CONCRETE STRUCTURAL MEMBERS This application is an improvement of my prior copending application, Ser. No. 768,933, filed Oct. 21, 1968 for FASTENING MEANS FOR WALL PANELS now US. Pat. No. 3,507,315.

This invention relates to means for mounting wall panels.

This invention relates to means for mounting wall panels such as precast concrete slabs, prestressed concrete beams and girders, or for anchoring heavy machinery.

More particularly, the invention relates to mounting large heavy panels, for instance, synthetic stone panels or other heavy masonry pieces, or other heavy components such as large machines.

The invention is not limited to mounting wall panels, but may be used for mounting components in any plane, for instance, on walls, ceilings, floors, etc.

Many large office buildings are being built with their entire outer walls being faced with stone or synthetic stone panels instead of the conventional method of laying bricks. These panels are large and heavy and aregenerally prefabricated with mounting attachments incorporated or embedded in them so that the panels can be lifted up by a crane and bolted into place on the steel frame of the building.

The present invention provides fastening means which are adjustable along two axes to receive a bolt which is mounted in a mounting hole of a structural member. The adjustment is provided by a pair of sliding members which are slidably dovetail connected along coordinate axes so that the mounting hole can be lined up as required.

In modern building construction, heavy wall panels are bolted onto the frame of the building. These panels are hoisted in place by means of derricks. It is difficult or impossible to locate the panel-mounting aperture in a precast concrete panel with sufficient accuracy. Therefore, adjustment means must be provided so that these panels can be secured to the building frame quickly under difficult conditions.

Accordingly, a principal object of the invention is to provide new and improved means for mounting precast concrete panels or members to a supporting structure.

Another object of the invention is to provide new and improved means for adjustably mounting precast panels or structural members to the frame of a building.

Another object of the invention is to provide new and improved means for ad justably mounting precast concrete members comprising a nut member which is adjustable for the two orthogonal axes.

Another object of the invention is to provide new and improved means for fastening wall panels, structural concrete beams, girders, machinery or equivalent members to a supporting structure, comprising a first member having a first dovetail slot, a second member having a second dovetail slot and having a dovetail projection, the axis of said dovetail projecting being 90 to the axis of said second dovetail slot, a third member having a dovetail projection and a threaded aperture, said second member being adapted to slide in said first dovetail slot of said first member, and said third member being adapted to slide in said second dovetail slot in said second member, whereby said threaded aperture is adjustable along two coordinate axes.

These and other objects of the invention will be apparent from the following specification and drawings, of which:

FIG. I is an exploded perspective view of the adjustment members.

FIG. 2 is a sectional view of the fixed member of FIG. 1.

FIG. 3 is a sectional view of the assembled members mounted in a concrete body and illustrating the use of the invention.

Referring to the drawings, a first member 1 is adapted to be fixedly embedded in the precast concrete panel or other structural member 2. The member 1 has a dovetail slot 3 and a projecting anchor 4.

The member 5 has a dovetail slot 6 and a dovetail projecting 7 which is adapted to fit into the dovetail slot 3 of the member The member 10 has a dovetail projection 11 which is adapted to slidably fit in the dovetail slot 6 of the member 5. The member 10 also has a threaded aperture 12, which is adapted to receive a threaded bolt. Members 1, 5 and 10 are preferably of a good grade of steel. The member 5 is preferably spring loaded in position with respect to member 1 by means of the spring 13 which is mounted in a mounting hole 14. There is preferably a corresponding spring located on the other side of member 5 which is not shown. The member 12 is preferably spring loaded against the member 5 by means of the spring 15, which is mounted in mounting hole 16, and there is preferably another spring on the other side of member 10 which is not shown.

FIG. 2 shows a sectional view of the member 1 showing the portion 4 as being longer than the front portion. This is for the purpose of providing a good anchor to the cast structural member. In order to enhance the bonding of the member 1 to the cast concrete member, semicircular slots are provided to receive reinforcing rods or members 17 and 18.

The process of bonding the fastening means to the concrete is as follows:

The assembly of members 1, 5 and 10 are enclosed in an open-ended enclosure 20 which may be of thin plastic. The enclosure 20 has a slot 21 for receiving the member 4. After the assembly is inserted in the enclosure 20, side covers are fastened to the enclosure 20 and the entire assembly is held in place in the concrete form while the concrete is being poured around it. The only purpose of the enclosure 20 is to permit pouring the concrete while keeping the slidable members protected.

The cast panel or member is mounted by first centering the nut 10 by eye. The panel is then lifted into place and a selfcentering bolt 22 is inserted through the mounting hole 23 in the building frame member 24. As the bolt is inserted and tightened up, the slidable dovetail members will automatically adjust to center the nut to receive the bolt 22.

The invention may also be used to fasten heavy machinery. In this case, the member 4, the protective enclosure 20 would not be necessary and the member 1 could be welded or bolted to the member being mounted.

I claim:

1. Means for fastening wall panels, structural concrete beams, girders, machinery or equivalent members to a supporting structure, comprising,

a first member having a first dovetail slot,

a second member having a second dovetail slot and having a dovetail projection, the axis of said dovetail projection being to the axis of said second dovetail slot,

a third member having a dovetail projection and a threaded aperture, said second member being adapted to slide in said first dovetail slot of said first member, and said third member being adapted to slide in said second dovetail slot in said second member, whereby said threaded aperture is adjustable along two coordinate axes,

said second and third slidable members being spring loaded,

a hollow enclosure adapted to seal the movable surfaces of said members and permit the assembly of said members to be incorporated in a cast structural member,

having an extending anchor portion.

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1. Means for fastening wall panels, structural concrete beams, girders, machinery or equivalent members to a supporting structure, comprising, a first member having a first dovetail slot, a second member having a second dovetail slot and having a dovetail projection, the axis of said dovetail projection being 90* to the axis of said second dovetail slot, a third member having a dovetail projection and a threaded apertUre, said second member being adapted to slide in said first dovetail slot of said first member, and said third member being adapted to slide in said second dovetail slot in said second member, whereby said threaded aperture is adjustable along two coordinate axes, said second and third slidable members being spring loaded, a hollow enclosure adapted to seal the movable surfaces of said members and permit the assembly of said members to be incorporated in a cast structural member, having an extending anchor portion. 